题目

--Can you tell me________ the kids after school?                  --I teach them to read.     A.where do you help     B. where you help    C.  how do you help      D. how you help 答案：D14．计算：（1）（π-3.14）0-（$\frac{1}{3}$）-2+（-2）2     （2）（2x-3y）（-2x-3y）-2（2y-x）2．